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首页> 外文期刊>Computer-Aided Civil and Infrastructure Engineering >An Effective Texture Mapping Approach for 3D Models Obtained from Laser Scanner Data to Building Documentation
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An Effective Texture Mapping Approach for 3D Models Obtained from Laser Scanner Data to Building Documentation

机译：从激光扫描仪数据到建筑文档的3D模型的有效纹理映射方法

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摘要

Obtaining virtual models from real buildings, terrains, or building works is a matter of increased interest in construction. The application of such models ranges from technical use in architecture and civil engineering, to multimedia presentation, or remote visits through the web. This is becoming possible thanks to recent advances in laser scanning technology and related 3D processing algorithms. Moreover, real texture mapped onto 3D models is often required for communication, cataloguing, or digital documentation projects. In this article, an effective methodology to obtain digital building documentation based on 3D textured models is presented. First of all, a brief presentation of laser scanners is given as their data are used. An approach for mapping photographic images onto 3D models is also presented. The proposed approach, based on a camera registration method, offers high flexibility as it is based on hand-held cameras and can be implemented in a computing-effective way. A method for automatic image selection in overlapped areas is also presented. Finally, some hints are given concerning the automatic extraction of sections, orthophotos, and feature lines from the models. Experimental results focused on heritage buildings are shown, which demonstrate the suitability of the proposed techniques.
机译：从真实建筑物，地形或建筑工程中获取虚拟模型是人们对建筑越来越感兴趣的问题。此类模型的应用范围从建筑和土木工程的技术应用到多媒体演示或通过Web的远程访问。这得益于激光扫描技术和相关3D处理算法的最新进展。此外，通信，编目或数字文档项目通常需要将真实纹理映射到3D模型。在本文中，提出了一种有效的方法来获取基于3D纹理模型的数字建筑文档。首先，简要介绍了激光扫描仪的使用数据。还提出了一种将摄影图像映射到3D模型上的方法。所提出的基于摄像机注册方法的方法具有很高的灵活性，因为它基于手持摄像机，并且可以以计算有效的方式实现。还提出了一种在重叠区域自动选择图像的方法。最后，给出了有关从模型中自动提取剖面，正射影像和特征线的一些提示。显示了针对文物建筑的实验结果，证明了所提出技术的适用性。

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